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Understanding the Nature of Information Seeking Behavior in Critical Care G Model ARTMED-1256; No. of Pages 9 ARTICLE IN PRESS Artificial Intelligence in Medicine xxx (2012) xxx–xxx Contents lists available at SciVerse ScienceDirect Artificial Intelligence in Medicine jou rnal homepage: www.elsevier.com/locate/aiim Understanding the nature of information seeking behavior in critical care: Implications for the design of health information technology a,∗ b c d b Thomas G. Kannampallil , Amy Franklin , Rashmi Mishra , Khalid F. Almoosa , Trevor Cohen , a Vimla L. Patel a New York Academy of Medicine, 1216 5th Avenue, New York, NY, USA b School of Biomedical Informatics, University of Texas Health Science Center, Houston, TX, USA c School of Public Health, University of Texas Health Science Center, Houston, TX, USA d Medical School University of Texas Health Science Center, Houston, TX, USA a r t i c l e i n f o a b s t r a c t Article history: Objective: Information in critical care environments is distributed across multiple sources, such as paper Received 29 March 2012 charts, electronic records, and support personnel. For decision-making tasks, physicians have to seek, Received in revised form gather, filter and organize information from various sources in a timely manner. The objective of this 14 September 2012 research is to characterize the nature of physicians’ information seeking process, and the content and Accepted 17 October 2012 structure of clinical information retrieved during this process. Method: Eight medical intensive care unit physicians provided a verbal think-aloud as they performed Keywords: a clinical diagnosis task. Verbal descriptions of physicians’ activities, sources of information they used, Information seeking time spent on each information source, and interactions with other clinicians were captured for analysis. Critical care The data were analyzed using qualitative and quantitative approaches. Distributed cognition Knowledge organization Results: We found that the information seeking process was exploratory and iterative and driven by the Complexity contextual organization of information. While there was no significant differences between the overall time spent paper or electronic records, there was marginally greater relative information gain (i.e., more unique information retrieved per unit time) from electronic records (t(6) = 1.89, p = 0.1). Additionally, information retrieved from electronic records was at a higher level (i.e., observations and findings) in the knowledge structure than paper records, reflecting differences in the nature of knowledge utilization across resources. Conclusion: A process of local optimization drove the information seeking process: physicians utilized information that maximized their information gain even though it required significantly more cognitive effort. Implications for the design of health information technology solutions that seamlessly integrate information seeking activities within the workflow, such as enriching the clinical information space and supporting efficient clinical reasoning and decision-making, are discussed. © 2012 Elsevier B.V. All rights reserved. 1. Introduction lack of knowledge, information overload affect the optimality of decision-making strategies. Human are often characterized as informavores [1]. We actively Critical care environments represent a prototypical seek, gather, consume and share information for satisfying diverse information-intensive, distributed and collaborative setting needs [2]. The purpose of information seeking depends on, among [3,4], where significant information is generated by health care other things, specific user needs and tasks at hand. In complex orga- professionals (physicians, residents, nurses, and other support nizational contexts, the ability of humans to access and utilize the staff), and from patient care related events (e.g., bed-side monitors necessary task-related information leads to better productivity and laboratory tests, medication orders). Most often, this information performance. But, the unaided mind, no matter how competent, is redundantly distributed across multiple sources, such as paper simply cannot focus on all available information for making optimal and electronic records, and physicians face the onerous task of decisions. Cognitive barriers such as memory capacity limitations, finding, retrieving, and filtering the necessary information for decision-making tasks. The distributed nature of information organization in critical care settings poses significant challenges for physicians in their information seeking activities including: (a) ∗ increased patient care time resulting from longer time for finding, Corresponding author. Tel.: +1 212 822 7356. E-mail address: [email protected] (T.G. Kannampallil). filtering and organizing information due to the redundancy in 0933-3657/$ – see front matter © 2012 Elsevier B.V. All rights reserved. http://dx.doi.org/10.1016/j.artmed.2012.10.002 Please cite this article in press as: Kannampallil TG, et al. Understanding the nature of information seeking behavior in critical care: Implications for the design of health information technology. Artif Intell Med (2012), http://dx.doi.org/10.1016/j.artmed.2012.10.002 G Model ARTMED-1256; No. of Pages 9 ARTICLE IN PRESS 2 T.G. Kannampallil et al. / Artificial Intelligence in Medicine xxx (2012) xxx–xxx available information and (b) increased possibility of missing et al. [17] categorized the information seeking behaviors of general information due to the distributed nature of information. All of pediatricians into time spent on using computers, digital libraries these significantly affect the quality of care, increase the possibil- and other information sources. They found that physicians usually ity of adverse events and can potentially impact patient safety. depend on more than one source during their information seek- With the increasing role of health IT and digital repositories in ing process. They argued that computer resources were the most clinical settings, it is relevant to evaluate the role of technology in “effective and time-efficient” mechanism for information seeking. supporting (or impeding) clinical reasoning and decision-making Other researchers found that clinicians relied on their peers, exter- [5]. nal text-based resources or Internet resources [18,19] for their We utilize a cognitively driven approach to characterize the information needs [20]. While there were differences in the nature efficacy of physicians’ information seeking process, and the struc- of information needs between physicians and other clinicians (e.g., ture and nature of clinical information that is retrieved and used [21]), most clinicians expressed significant difficulty in obtaining for decision-making tasks. While the importance of cognitive sci- “patient, domain and institution-specific information in a timely ence research on understanding the nuances of reasoning and manner,” due to the difficulty in finding the right sources of infor- decision-making has been well established, primarily through labo- mation [22,23]. Prior research has also described the challenges ratory evaluations (e.g., [6–8]), we investigate information seeking of finding clinical information in a timely manner, especially in and decision-making “in the wild,” [9] by preserving the con- dynamic critical care settings. For example, Ely et al. [24] found straints of information sources and their availability that physicians that physicians spent on average less than 2 min pursuing clini- encounter in their regular clinical practice. cally relevant information. In a related study, Sackett and Strauss Insights on the information seeking behavior of physicians can [25] found that information resources had to be accessible within help in identifying the inefficiencies (e.g., process loses) in the 25.4 s for bedside consultations. physician information seeking process, for developing cognitive While all of these studies highlight the significant challenges of models of physicians’ information choice behavior and for design- information seeking in clinical environments as potential reasons ing and developing integrated intelligent health IT solutions that for high percentage of unmet information needs, they did not inves- can assist in clinical decision making. Additionally, understanding tigate their causal determinants or efficiency of processes involved the structure and nature of information used by clinicians during in clinical information seeking. One notable exception is the study this process can trigger the development of clinical systems that by Patel et al. [5] who found differences in the nature of use of streamline information retrieval and visualization mechanisms. computerized and paper based records during diagnosis tasks. In a study comparing the nature of information in paper and comput- erized records, they found that computerized records impacted the 2. Background and significance data collection, knowledge organization and the reasoning process of the physician. Their focus was on elucidating the differences in The complexity of patient care is exacerbated in distributed, reasoning process caused by paper and electronic records. information-rich critical care environments where physicians have In summary, most prior work on information seeking investi- to find the “right information at the right time” for making timely gated clinical information needs during the information seeking decisions. There is significant empirical evidence that a large per- process and the sources of information used during this process.
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